diff options
Diffstat (limited to 'src/thread/pthread_mutex_unlock.c')
| -rw-r--r-- | src/thread/pthread_mutex_unlock.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/thread/pthread_mutex_unlock.c b/src/thread/pthread_mutex_unlock.c index 5855db0b..6c4d7f22 100644 --- a/src/thread/pthread_mutex_unlock.c +++ b/src/thread/pthread_mutex_unlock.c @@ -5,9 +5,11 @@ int pthread_mutex_unlock(pthread_mutex_t *m) pthread_t self; if (m->_m_type != PTHREAD_MUTEX_NORMAL) { + if (!m->_m_lock) + return EPERM; self = __pthread_self(); if ((m->_m_lock&0x1fffffff) != self->tid) - return EPERM; + return EPERM; if ((m->_m_type&3) == PTHREAD_MUTEX_RECURSIVE && --m->_m_count) return 0; if (m->_m_type >= 4) { |